Stephan Thelen's music has grown beyond the Swiss Minimalist movement, as seen in his work over the past decade. His Fractal Sextet project exemplifies this evolution, deepening his original concepts while embracing new influences. Their second album, Sky Full of Hope, builds on the promise of their debut, showcasing a confident and cohesive group dynamic. The album features intricate polyrhythms and complex time signatures, but despite its mathematical foundations, the music remains accessible and engaging. Thelen credits the group's ability to blend technical precision with musicality, creating a sound that feels both refined and compelling.